Humectant

PEG-32

Reviewed by Kate · Last updated 18 Aug 2026

PEG-32 functions as an emulsifier, which is a type of ingredient

Addresses

Dehydration

What Is PEG-32?

PEG-32 functions as an emulsifier, which is a type of ingredient that keeps unlike substances in a formula (such as oil and water) from separating.

How widely it's used

0.3%
of skincare products contain this ingredient — placing it in the top 25% of most-used ingredients.
Most common in: Cleansers Treatments Masks

Regulatory information

Standardised cosmetic-ingredient identifiers used by regulators.

Show identifiers
INCI Name
PEG-32
INN Name
macrogol 1540
Function
Humectant, Solvent

From the Clinic

Not sure what your skin actually needs?

Two minutes, a few questions, and we’ll point you at what matters — no guesswork.

Take the skin quiz

Part of a family

PEG-32 is a variant of PEG-75, the form you will most often see on an ingredients list.

Functions as a humectant to boost skin’s hydration | May also be used as a solvent to mesh ingredients cohesively and enhance formulary texture

Learn More About Skincare Ingredients

Explore our comprehensive ingredient glossary to understand what's in your products.

Browse All Ingredients
Added to basket View basket Checkout

Authorised Stockist

Official UK retailer

Tracked Delivery

Free UK shipping over £50

5 Star Rating

Trusted by thousands

Expert Advice

Free consultations